Underlayer
Steganography made simple
Free · In‑App Purchases · Designed for iPad
UNDERLAYER - STEGANOGRAPHY MADE SIMPLE
Transform ordinary images into secret carriers. Hide confidential messages invisibly within photos and share them through any messenger without raising suspicion.
KEY FEATURES:
HIDE SECRETS
• Embed text messages invisibly into any image
• Two encoding modes: Hidden (invisible pixels) and Open (colored frame)
• Open mode survives messenger compression (Telegram, WhatsApp, etc.)
• Share processed images directly or save to gallery
REVEAL MESSAGES
• Extract hidden text from steganographic images
• Automatic detection of encoding method
• Works with images received through messengers
• Share intent support - open images directly from gallery
WHY UNDERLAYER?
• Simple & Intuitive - No cryptography knowledge required
• Messenger-Friendly - Open mode designed for compressed sharing
• Privacy First - All processing happens locally on your device
• Universal - Works with JPG, PNG, WebP formats
• No Account Required - Start using immediately
USE CASES
• Private communication through public channels
• Watermarking images with hidden ownership data
• Secure note-taking in plain sight
• Educational tool for learning steganography
• Fun way to send secret messages to friends
SECURITY & PRIVACY
• No internet connection required for processing
• Your messages never leave your device
• No data collection or tracking
• Complete control over your secrets
PREMIUM FEATURES
• No banner ads at the bottom
• No interstitial ad interruptions
• Process unlimited images without ad breaks
HOW IT WORKS
1. Select any image from your gallery
2. Enter your secret message
3. Choose encoding mode (Hidden or Open)
4. App embeds message into image pixels
5. Share through messengers or save locally
6. Recipient opens image in Underlayer to reveal message
ENCODING MODES EXPLAINED
HIDDEN MODE
• Message embedded invisibly in image pixels
• Completely undetectable to human eye
• Best for uncompressed image sharing
• Lost when image is compressed by messengers
OPEN MODE
• Message encoded as colored frame border
• Visible as decorative edge around image
• Survives Telegram, WhatsApp compression
• Recommended for messenger sharing
INTERNATIONAL
• Available in English and Russian
• More languages coming soon
• Automatic language detection
Whether you're a privacy enthusiast, security professional, or just curious about steganography - Underlayer makes it accessible to everyone.
Download now and start hiding your secrets in plain sight!
Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
This app hasn’t received enough ratings or reviews to display an overview.
Minor UI enhancements
The developer, Mihail Rukavishnikov, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Mihail Rukavishnikov
- Size
- 30.4 MB
- Category
- Utilities
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPad
Requires iPadOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- Languages
- English
- Age Rating
4+
- 4+
- Contains
Advertising
- In-App Purchases
Yes
- Premium $2.99
- Copyright
- © Mihail Rukavishnikov